Python setattr() exception
Here we will create read-only attributes of the object using property() function in Python and if we try to set the attribute’s value using setattr() function then an exception will rise.
Python3
class Person: def __init__(self): self._name = None def name(self): print('name function called') return self._name # for read-only attribute n = property(name, None)p = Person()setattr(p, 'n', 'rajav') |
Output :
---> 16 setattr(p, 'n', 'rajav') AttributeError: can't set attribute
Python setattr() method
Python setattr() method is used to assign the object attribute its value. The setattr() can also be used to initialize a new object attribute. Also, setattr() can be used to assign None to any object attribute.
Example :
Python3
class Person: def __init__(self): passp = Person()setattr(p, 'name', 'kiran')print(f"name: {p.name}") |
Output :
name: kiran